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Miss tilton

Science Chapter 21 Review. Miss tilton. A ___________________ uses convex lenses to gather and focus light. refracting telescope. A low-mass main sequence star will eventually evolve into a . white dwarf. A star system in which one star blocks the light from another star is called a(n ).

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Miss tilton

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  1. Science Chapter 21 Review Miss tilton

  2. A ___________________ uses convex lenses to gather and focus light. • refracting telescope

  3. A low-mass main sequence star will eventually evolve into a • white dwarf

  4. A star system in which one star blocks the light from another star is called a(n) • eclipsing binary

  5. A star cluster loosely organized and containing only a few thousand stars is a(n) • open cluster

  6. An H-R diagram is a graph of stars’ temperature and • absolute brightness

  7. Astronomers use ____________ to determine the chemical composition of stars. • spectrographs

  8. A galaxy shaped like a ball and containing only older stars is most likely a _____ . • elliptical galaxy.

  9. Visible light is a form of • electromagnetic radiation

  10. Pulsars are a kind of ____________________ . • neutron star

  11. The scientist who made the telescope famous for being the first to look in the sky was • Galileo

  12. Choose either a high-mass or low-mass star. Outline the stages of the star’s life cycle. (You may list the stages or draw a quick sketch.)

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